Opacity color

.opacity30 {
  opacity: 0.3;
  filter: alpha(opacity=30); /* For IE8 and earlier */
}

Css opacity background color

background: rgba(255, 255, 255, 0.25);

Background color with opacity

h1 {background-color:rgba(255,0,0,0.3);}

Background color opacity

rgba(51, 170, 51, .1)    /*  10% opaque green */ 
rgba(51, 170, 51, .4)    /*  40% opaque green */ 
rgba(51, 170, 51, .7)    /*  70% opaque green */ 
rgba(51, 170, 51,  1)    /* full opaque green */

Source: stackoverflow.com

Similar codes

0 vote87 views1 answer
How to get two elements on the same line html
CSS
0 vote89 views1 answer
Grippy css
CSS
0 vote87 views1 answer
Css clip
CSS
0 vote95 views1 answer
Studio 3t restore snapshot
CSS
0 vote92 views1 answer
How to use * in html
CSS
4 votes88 views1 answer
Overflow dottet
CSS
7 votes102 views3 answers
Change font awesome icon color
CSS
0 vote97 views1 answer
Colour button link
CSS
9 votes98 views4 answers
Animation shorthand css
CSS
19 votes108 views5 answers
Css opacity background color
CSS